Wow, sorry to hear about the dilemma wth the blackneck female. Usually a regurgitation episode comes from too big of a meal at one feeding. Is she a captive bred blackneck? I see where you stated she had never been dewormed? The other possibilities are husbandry related especially the temps. Too high or too low. Excessively low is mostly the cause due to poor digestion. The other is excessive handling after a meal. Why 7 pinkies instead of a single appropriate sized meal? Were these small pinks or large. Either or it seems like quite a bit for 1 meal. The blood could be from the superficial veins of the pinkies. Hope this helps.